Love conspiracy theories and / or unsolved mysteries? Here are a few to whet your appetite. Starting off, we have the Aluminum Wedge of Aiud, which is basically a wedge-shaped object found two kilometers east of Aiud, Romania, on the banks of the Mures River in 1974. The object was reported to be unearthed 35 feet under sand and alongside two mastodon bones. A mastodon is an extinct large tusked mammal species. The alloy of the wedge is composed of 12 different elements and considered strange because aluminum was not discovered until 1808 and not produced in quantity until 1885. Aluminium requires 1,000 degrees of heat to be made. The fact that the wedge was found in the same layer of earth as mastodon bones would make it at least 11,000 years old. Many people have claimed that the artifact is proof that aliens visited Earth and engineers say that the object resembles the foot of landing gear, not unlike the technology used on spaceships. Click here to view the first image in this week's demotivational poster gallery.